Fastening device.



J. J. DUNN.

PASTBNING DEVICE.

APPLIoATlon-FILED AUG. 2, 1911.

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JULIUS J'. DUNN, 0F DENVER, COLORADO.

FASTENING DEVICE.

Specification oi Letters Patent.

Patented July 2, 1912.

Appuoauon mea August a, 1911. serial no. einem.

'Toy all fz'bh'om z't may concern:

`Be it known that I, .Timms J. DUNN, a

l`citizen of the United States, residing at` Denver, in the county ofDenver and State' ofOolorado, have invented new'and useful Im rovementsin Fastening Devices, of which the following is a specification.

An object of the invention. is'to provide a device for retainingconnectible articles in connected and rigid position, the device be-'lhg'fpa'ticularlyadaptable for use in connection with metallicstructures such' as window casings and the like where bolting Re erenceis to be had to the accom any` ing drawings constituting a part o thisspecification, in which similar characters of reference denotecorresponding parts in all the views and inwhich` i Figure 1 is aerspective View of my fastening device. Fig. 2 is a side elevation of mydevice, showing the same applied Vfor connecting a plurality ofstructures, the device being in initial position and the structuresbeing shown in section. Y Fig. 3 is a view similar to Fig. 2 but showingmy device in final position to retain the structures in ritgid engaement. Fig. ,4. is a side elevation o a modi ed form of my deviceshowing the same applied to a plurality of structures for retaining thesame in rigid engagement. Referring more particularly to the views,Iprovidea single strip of material 10 bent to form a loo 11, having ahead 12 and ends 13, the said strip of material 10 beingy then bentrearwardly at the ends 13 of the loop 11, to form portions 14 to lieupon the outer sides of the loop 11, the ends of the portions 14 beingarranged to extend toward the head 12 and within a short dis loop 11 andthe portions 14 are now passed through anv aperture 16 in a supportingplate 17, so that the upper side of the supporting plate will -beengaged by the under sides of the flanges 15, the ends 18 of the flanges15 being then bent around the edge of t e plate 17,toengage the underside of the plate as shown in Figs. 2 and 3. As shown 1n Figs. land 2,it will be seen that -the hcad12 of the loop 11 extends upwardly adistance beyond the supporting plate 17, while the lower ends 13 of theloop ll extend v.downwardly a'I distance beyond the late 17, the innersides of the portions 14 em 'arranged to lie on the outer sides ot theoop 11.

When it is desired to secure a bracket 19 to a base 20, the ends 13 ofthe loop 1l vand the portions 14 are passed through registering openingsin the bracket 19 and base 20 so that the ends 18 of the flanges 15 willlie against the upper side of the bracket ll). A hammer is now appliedto the head 12 of the loop 11 to force the. same downwardly and in doingso the portions 14 will be bent outwardly and the lower ends 13 of theloop ll will be bent laterally to the loop when the head 12 reaches aposition in horizontal alinement with the Hanges 15 as shown in Fig. 3;Thus, it will be seen that the ends 13 of the loop 11 and the portions14, bent outwardly by the `force applied to the head 12 will retain thebracket 19 in rigid engagement with the base 20.

In Fig'. 4 I disclose a modified form of my device and in which Iprovide a series of serrations 21 on the outer sides of the portions14,the' said sei-rations being adapted to gri the base 2O when the head12 is hammeredpdownwardly to force the lower portions of my deviceoutwardly as shown in P ig. 4. y providing the plate 17, a supportingsurface is formed for engagement with the upper side ofthe bracket 19and when a downwardpressure isapplied to the head 12 of the loo 11, thatIportion of the bracket 19, covered) by theplate 17 will be preventedfrom bending o r (giving with the pressure applied to the hea 12as willbe readily understood.

`Having thus fully described the invention, what I claim as new, is

1. In combination with a supporting plate, a single strip of materialbent. to form a loo having a head, the said strip being then iientrearwardly at the ends of the loop to form portions extending toward thehead thereofftheends of the said loo and the said portions being thenpassed t irough an aperture in the said plate so that Vthe ends of theloop will extend a distance beyond one side of the plate and the headot' the loop will extend a distance beyond the other side of the plate,the said portions being then bent to forni outwardly extending lnngesfor engagement with the upper side of the plate with the ends of thesaid flanges bent around the edge of the plate to engage the under sidethereof.

2. In combination with a supporting plate, a strip of material benttofforma loop extended through an aperture in the said plate `with thehead of the loop extending a distance beyond one side of the plate andthe ends of the loop extending a distance beyond the other side of theplate, the said strip being then bent rearwardly upon the loop and thenbent laterally outward from the loop to form flanges engaging the saidsupporting plate to rigidly retain the supporting plate in engagementWith the said strip and sel-rations being formed on the portions of thesaid strip that are bent rearwardlylupon the said loop.

In testimony whereof I alix my signature in presence of two witnesses.

n J ULIUS J. DUNN.

Witnesses: I). F. RANKIN,

H. L. VISSER.

